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# File activemodel/lib/active_model/validations/numericality.rb, line 11def check_validity!keys=CHECKS.keys-[:odd,:even]options.slice(*keys).eachdo|option,value|nextifvalue.is_a?(Numeric)||value.is_a?(Proc)||value.is_a?(Symbol)raiseArgumentError,":#{option} must be a number, a symbol or a proc"endend